REDARC BCDC1240D Dual Input 40A In-vehicle DC Battery Charger
The REDARC BCDC1240D In-vehicle Battery Charger is the next generation in REDARC's DC to DC charging technology, with additional features that make it the most advanced dual battery charger on the market. Featuring a Maximum Power Point Tracking (MPPT) solar regulator, the BCDC1240D will charge from both solar and the alternator simultaneously. With built-in 'Green Power Priority' it will select solar charging first, meaning less load on the alternator. Suitable for 12 or 24-volt vehicle systems, the unit will also work with either standard or variable/smart alternators. The BCDC1240D also comes with patented charging profiles, including a lithium charging profile. The 'Dual' input range will continue to charge all other types of batteries including AGM, GEL, standard lead acid and calcium. As a guide, the BCDC1240D is used for battery bank sizes over 200AH. For smaller batteries of 75-200AH REDARC recommends the BCDC1225D. Proven and Tested The award-winning technology in the BCDC has been independently verified and tested to ensure battery life is maximised, charging your battery to a proven 100%. Built in Australia and tested for our unique conditions, the DC to DC battery charger will work in the extreme heat of the Simpson Desert, up to 80°C and can handle deep water crossings at Cape York – water, dust and vibration are no match for this charger. If you’re heading out into the bush and want to get there and back again safely – you can trust REDARC.
The REDARC BCDC1240D In-vehicle Battery Charger is the next generation in REDARC's DC to DC charging technology, with additional features that make it the most advanced dual battery charger on the market. Featuring a Maximum Power Point Tracking (MPPT) solar regulator, the BCDC1240D will charge from both solar and the alternator simultaneously. With built-in 'Green Power Priority' it will select solar charging first, meaning less load on the alternator. Suitable for 12 or 24-volt vehicle systems, the unit will also work with either standard or variable/smart alternators. The BCDC1240D also comes with patented charging profiles, including a lithium charging profile. The 'Dual' input range will continue to charge all other types of batteries including AGM, GEL, standard lead acid and calcium. As a guide, the BCDC1240D is used for battery bank sizes over 200AH. For smaller batteries of 75-200AH REDARC recommends the BCDC1225D. Proven and Tested The award-winning technology in the BCDC has been independently verified and tested to ensure battery life is maximised, charging your battery to a proven 100%. Built in Australia and tested for our unique conditions, the DC to DC battery charger will work in the extreme heat of the Simpson Desert, up to 80°C and can handle deep water crossings at Cape York – water, dust and vibration are no match for this charger. If you’re heading out into the bush and want to get there and back again safely – you can trust REDARC.
The REDARC BCDC1240D In-vehicle Battery Charger is the next generation in REDARC's DC to DC charging technology, with additional features that make it the most advanced dual battery charger on the market. Featuring a Maximum Power Point Tracking (MPPT) solar regulator, the BCDC1240D will charge from both solar and the alternator simultaneously. With built-in 'Green Power Priority' it will select solar charging first, meaning less load on the alternator. Suitable for 12 or 24-volt vehicle systems, the unit will also work with either standard or variable/smart alternators. The BCDC1240D also comes with patented charging profiles, including a lithium charging profile. The 'Dual' input range will continue to charge all other types of batteries including AGM, GEL, standard lead acid and calcium. As a guide, the BCDC1240D is used for battery bank sizes over 200AH. For smaller batteries of 75-200AH REDARC recommends the BCDC1225D. Proven and Tested The award-winning technology in the BCDC has been independently verified and tested to ensure battery life is maximised, charging your battery to a proven 100%. Built in Australia and tested for our unique conditions, the DC to DC battery charger will work in the extreme heat of the Simpson Desert, up to 80°C and can handle deep water crossings at Cape York – water, dust and vibration are no match for this charger. If you’re heading out into the bush and want to get there and back again safely – you can trust REDARC.
The REDARC BCDC1240D In-vehicle Battery Charger is the next generation in REDARC's DC to DC charging technology, with additional features that make it the most advanced dual battery charger on the market. Featuring a Maximum Power Point Tracking (MPPT) solar regulator, the BCDC1240D will charge from both solar and the alternator simultaneously. With built-in 'Green Power Priority' it will select solar charging first, meaning less load on the alternator. Suitable for 12 or 24-volt vehicle systems, the unit will also work with either standard or variable/smart alternators. The BCDC1240D also comes with patented charging profiles, including a lithium charging profile. The 'Dual' input range will continue to charge all other types of batteries including AGM, GEL, standard lead acid and calcium. As a guide, the BCDC1240D is used for battery bank sizes over 200AH. For smaller batteries of 75-200AH REDARC recommends the BCDC1225D. Proven and Tested The award-winning technology in the BCDC has been independently verified and tested to ensure battery life is maximised, charging your battery to a proven 100%. Built in Australia and tested for our unique conditions, the DC to DC battery charger will work in the extreme heat of the Simpson Desert, up to 80°C and can handle deep water crossings at Cape York – water, dust and vibration are no match for this charger. If you’re heading out into the bush and want to get there and back again safely – you can trust REDARC.
in 35 offers
The lowest price for REDARC BCDC1240D Dual Input 40A In-vehicle DC Battery Charger right now is $477.70 at eBay.com.au, compared across 27 retailers.
The all-time low was $280.00 on 1 Nov 2025 — today's price is 71% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 9 June 2026.
Last updated at 09/06/2026 19:37:32
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Delivery $14.50
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Redarc BCDC Classic Under Bonnet DC Battery Charger - 40A BCDC1240D | Redarc
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originally posted on nationwideautoparts.com.au
The young Lady I spoke to on the phone was exceptionally good at her job. What an asset to Nationwide she is. Great service. Couldn’t be happier we contacted Nationwide. Thank you.
originally posted on nationwideautoparts.com.au
Happy as Larry with My chargers, purchased one for My GU Patrol work vehicle and one for the LC200 Sahara, just waiting on Batteries now from WA.Service from Nationwide was excellent, prompt delivery and great customer service. Highly recommended to anyone hunting auto parts.
originally posted on autobarn.com.au
Quality just as you expect from redarc! Works a treat! Also according to my battery monitor, it's pushing 42 to 43 amps!!
| Input charge | Simultaneous vehicle and solar |
| Installation type | In-cabin or under bonnet |
| Input (operating) voltage | 9-32VDC |
| Output system voltage | 12VDC |
| Maximum charging voltage | 15.3V |
Redarc Bcdc1240d Classic40 Rugged Solar Alternator 40a Dual Dc-dc
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Redarc Bcdc1240d Dc To Dc Charger 40a 3 Stage (bcdc1240d)
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Redarc 12/24v Smart Start Bc-dc Battery Charger 40a
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Redarc Dual Input 40a In-vehicle Dc Battery Charger Bcdc1240d
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Redarc Battery Charger 12v 40a 3 Stage Auto Bcdc1240d
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
The young Lady I spoke to on the phone was exceptionally good at her job. What an asset to Nationwide she is. Great service. Couldn’t be happier we contacted Nationwide. Thank you.
Happy as Larry with My chargers, purchased one for My GU Patrol work vehicle and one for the LC200 Sahara, just waiting on Batteries now from WA.Service from Nationwide was excellent, prompt delivery and great customer service. Highly recommended to anyone hunting auto parts.
Quality just as you expect from redarc! Works a treat! Also according to my battery monitor, it's pushing 42 to 43 amps!!
I recently had the opportunity to test out the Redarc 40 AMP Charger, and I must say, it has exceeded my expectations in terms of performance, efficiency, and overall reliability. This compact charging solution is a game-changer for those constantly on the move, providing a hassle-free way to charge your secondary battery while on the road.
Realtively easy to install and works perfectly. Great price. Very happy with purchase
Redarc have produced a high quality product here. Excellent performance during the first 2 months since installation. I purchased a cheap brand last time and it fried itself! So, my advice for critical components is, pay for quality, pay once! It's not just about cheap setup, it's also about trouble free enjoyment.
Awesome product ,easy install ,keeps my secondary battery topped up easily
1 week after payment I received an email to say you ran out of stock. 2 weeks later received an update to say it's been shipped. Another 1.5weeks of watching the courier tracking showing it hasn't moved from their depot I get told they lost the parcel. Terrible experience.
Very reliable and well built.
I replaced a 25amp DCDC standard charger with this 40amp Lithium to date it has performed flawlessly I have always had a lot of success with Redarc Products
| Input charge | Simultaneous vehicle and solar |
| Installation type | In-cabin or under bonnet |
| Input (operating) voltage | 9-32VDC |
| Output system voltage | 12VDC |
| Maximum charging voltage | 15.3V |
